"Absorption bands" refer to specific regions in the spectrum of electromagnetic radiation where a substance absorbs or takes in light of certain wavelengths.
Full definition
The CO2 climate forcing does not increase as rapidly as the CO2 amount because of partial saturation of
CO2 absorption bands [75].
Also realise that because the CO2
IR absorption bands near the earth's surface are saturated, the phenomenon of self - absorption means incremental CO2 climate sensitivity is probably slightly negative.
The CO2 climate forcing does not increase as rapidly as the CO2 amount because of partial saturation of CO2 absorption bands [75].
... It is well known that the gas carbon dioxide has certain
strong absorption bands in the infra - red region of the spectrum, and when this fact was discovered some 70 years ago it soon led to speculation on the effect which changes in the amount of the gas in the air could have on the temperature of the earth's surface.
We could discuss at what frequencies various types of excitation take place and at what elevations within the ato sphere said RFeK gains are naximized, and at what levels and concentrations there is in fact a negative
absorption band within the spectrum.
Other GHGs are oxygen (O2), ozone (O3), nitrous oxide (NO), and methane (CH4), but they have relatively
narrow absorption bands in the range where the Earth outputs longwave radiation.
The transmittance windows in Figure 1 are defined
by absorption bands of water and, significantly, of oxygen.
Quite strange: CO2 in itself is not a pollutant, it's his IR
absorption band as well as the time it needs to go back in the biosphere / aquasphere which is problematic.
Consider the CO2
absorption band around 15 μm (about 650 cm - 1), it is strong enough to not let any light go through after a few tens of meters at surface temperature and pressure.
So how come the OLW radiation in the CO2
absorption bands from the surface manages to get unhindered to some altitude, then gets absorbed, re-radiates half down towards the surface, again unhindered and half towards space, again unhindered?
ii) The
respective absorption bands for each trace gas will be exhausted long before the volumes of those gases in the atmosphere become big enough to make a measurable difference to the overall density of the atmosphere and the size of the greenhouse effect which is density dependent.
Further, there is the fact that changing the variable in Planck's law from wavelength to frequency or wavenumber shifts the peak emissions to wavelengths exactly coinciding with CO2
primary absorption band as is evident from this --
They
found absorption bands characteristic of the iron in volcanic glass, a shiny substance similar to obsidian that forms when magma cools too fast for its minerals to crystallise (Geology, DOI: 10.1130 / G32755.1).
The color coding shows the strength of the
organics absorption band, with warmer colors indicating the highest concentrations.
And ices can be investigated, through their solid -
state absorption bands, in a variety of objects - from active comets to satellites and TNOs.
This makes it crucial to constrain the environment of H2O ice to enable correct assignments of other species contributing to the interstellar 6
um absorption band.
In particular, there were
distinctive absorption bands, matching mixtures containing ammoniated minerals, associated with wavelengths that can't be observed from Earth - based telescopes.
Those most similar to class M stars have strong
ZrO absorption bands analogous to the TiO bands of class M stars, whereas those most similar to carbon stars have strong sodium D lines and weak C2 bands.
Carbon dioxide (CO2) is mostly transparent to radiation, but it has a
few absorption bands, the most important of which is around 12μ to 17μ, in the range where the Earth outputs longwave radiation.
Phrases with «absorption bands»